3 Pair (6 pcs., 1 pair small + 1 pair medium + 1 pair large) of Memory Foam Earbud Tips Brought to You By Lostearbuds: Lostearbuds Brand, Our Tips Fit Over 50 Types of earbuds.(they will fit a 3.5mm to a 6mm speaker stem) speaker stem is the part of the earbud the tip fits on. 4.5mm tip hole, Fits over 50 types Enhances Audio Performance Blocks Outside Noise Comfortable Memory Foam for Supreme Comfort Excellent noise isolation for private listening